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Surface polarization and edge charges

Yuanjun Zhou, Karin M. Rabe, and David Vanderbilt
Phys. Rev. B 92, 041102(R) – Published 6 July 2015

Abstract

The term “surface polarization” is introduced to describe the in-plane polarization existing at the surface of an insulating crystal when the in-plane surface inversion symmetry is broken. Here, the surface polarization is formulated in terms of a Berry phase, with the hybrid Wannier representation providing a natural basis for study of this effect. Tight-binding models are used to demonstrate how the surface polarization reveals itself via the accumulation of charges at the corners and edges for a two dimensional rectangular lattice and for GaAs respectively.

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  • Received 29 April 2015

DOI:https://doi.org/10.1103/PhysRevB.92.041102

©2015 American Physical Society

Authors & Affiliations

Yuanjun Zhou, Karin M. Rabe, and David Vanderbilt

  • Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA

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Issue

Vol. 92, Iss. 4 — 15 July 2015

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